a lot of questions in the bronx in new york city. we are sitting here where all 7 of the passenger cars in the metro north train did de rail. the lead locomotive did end up teetering inches away from the water. a track problem, was it human error, mechanical error? was speed a factor the ntsb is looking into all of those factors. the metro north train that was southbound was headed toward grand central station t. derailed in the bronx around 7:20 yesterday morning. th the train did not slow down. investigators are trying to determine how bad it was going as it was approaching the curve. >> it is not the fact that there's a curve here. we have always had this configuration. we didn't have accidents. there has to be another factor. >> investigators say the speed limit is 35 miles per hour. it comes from an area where it was 70 miles an hour. >> we don't know what the train speed was. we will learn that from the event recorders. we have downloaded the data off the locomotive we have not been able to identify it or verify it. >> two of t